If you are wanting your code to be valid code, you can go to http://validator.w3.org/ and validate the code.
As for validating your code, you will find some folks here don't, some do, and some use the validator tool as an error checker.
Using the validator tool as an error checker would help your code. You have a number of errors that may all clear up just by properly closing all your meta tags. Your Google verification meta tag is properly closed. Just start by changing all your meta tags from closing with a > to closing with a /> and then check your validation. That will let you find any real coding errors.
As for the look (design) of the site -- If the boss likes it, then use it. No need to change the design if it does what you want. I am not a designer, but it looks good to me.